I requested my web hosting service provider for wildcard but they sent me this link http://kb.parallels.com/en/2239and they said it is not possible to in Windows hosting.. without wildcard how to achieve asp.net 4 routing this....i am trying this: When user register on my website, that time create a subdomain with user name like this< username >.domain.com like abc.domain.com, xyz.domain.com, sam.domain.comand It must points to domain.com/Users/< username >/index.aspNote: i am using windows shared hosting from a company with plesk10, iis7, reseller hosting plan, i have option to edit DNS in Plesk 10, i try but it point to default page of plesk not to my domain.com.If i buy a static IP address for my domain.com will that help to achive this or not?